# -*- coding: UTF-8 -*-

import math
import random

print dir(math.ceil)
print random.random()
print random.randrange(1,5,1)
print random.randrange(1,5,1)
print random.randrange(1,5,1)
print random.seed(5)
print random.random()
print random.seed(5)
print random.random()
list = [20, 16, 10, 5];
random.shuffle(list)
print "随机排序列表 : ",  list
var = r'\n\r\t\'Hello World!'
print var
print 'n' in var